Both Marco and Jonathan might know my kid Eri. She could potentially bond with Marco over a mutual interest in anime, though her tastes are less mainstream and she'd be likely to poke fun of his hyperactivity/obsession with Japanese media. As for Jon, he and Eri share similar interests in gaming and forum browsing. On the other hand, Eri doesn't like bullies on account of being an easy target for them herself, so whether or not she'd be willing to tolerate him would depend on which side of him she sees. Hopefully neither of those are too much of a stretch.